In the study of physics, what distinguishes a scalar from a vector?
Scalars have both a magnitude and a direction, but vectors have only a magnitude.
A scalar is specified with a single number, but a vector is specified using both a magnitude and a direction.
A scalar is a dimensionless number, while vectors are numbers that have dimensions.
Nothing—the terms “vector” and “scalar” are different names for the same thing.
A scalar must always be positive, but vectors can be positive, negative, or zero.

Question

In the study of physics, what distinguishes a scalar from a vector?
	 Scalars have both a magnitude and a direction, but vectors have only a magnitude.
	 A scalar is specified with a single number, but a vector is specified using both a magnitude and a direction.
	 A scalar is a dimensionless number, while vectors are numbers that have dimensions.
	 Nothing—the terms “vector” and “scalar” are different names for the same thing.
	 A scalar must always be positive, but vectors can be positive, negative, or zero.

isaiah.feynman · Answer

A scalar is specified with a single number, but a vector is specified using both a magnitude and a direction.

anonymous · Answer

what is a scalar? i really dont get it?

isaiah.feynman · Answer

Scalars don't have direction. For example temperature, density etc. These two things have magnitude but no directions.

anonymous · Answer

ohhh I get it thank you very much, can I post more questions and can you please help me?

isaiah.feynman · Answer

Sure.

anonymous · Answer

thank you